Professor XXXL (pronounced Triple Extra-Large) is an insane scientist whose main goal is to create the perfect snowcone. He is very physically large and is constantly afflicted by mutations which give him various animal parts. The character is unique in that he has never shown to have any intentions of destroying the Kids Next Door or terrorizing kids; in both episodes which feature him as the main villain, he is thought to be carrying out an evil plan by Sector V and is revealed at the end to not be. However, he is more than willing to destroy the KND when they attempt to interfere. This misunderstanding is likely caused by the openly sinister personality with which the professor carries out his harmless endeavors. The one time his intentions were actually evil was in Operation: S.N.O.W.G